Got rid of version.txt, versioning now happens in package.json
(cherry picked from commit 97bc0d43bd14f15c16fe73dabfdcff28cb48e389)

Conflicts:
	Gruntfile.js
	js/jquery.mobile.core.js
	version.txt
Make build more like master
Moved RequireJS plugins to requirejs/plugins
(cherry picked from commit 870d4e2b603dfccc6afcb26119e824ba23f048b9)
Whitespace
(cherry picked from commit e80ef3af9f03cb3aade27173b5fd47ed6c7cd299)
Added RequireJS json plugin
(cherry picked from commit fb292939129a51846547458e495cbec1a725147a)